As someone who's needed to lose 20 pounds for the last 20 years, I've never been a big fan of scales. Teller of truths, dasher of hopes, and sapper of motivation, the scale lies smug at your feet impassively displaying its readout as if to say: "What? They're just numbers." But they say so much more, don't they? Now there's a new scale from Withings that not only lets you know how much weight you didn't lose yesterday, but also measures the wave your heart makes in your arteries to make you feel extra bad about your cardiovascular health too. I tried it out and investigated Withings' claims.